Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4342808 | Roll stock for use in manufacture of bag | Marinus J. M. Langen | 1982-08-03 |
| 4274245 | Checkout counter | Marinus J. M. Langen | 1981-06-23 |
| 4226172 | Method for manufacturing a square bottom bag | Marinus J. M. Langen | 1980-10-07 |
| 4189089 | Bag having sides seamed by complementary bands of cohesive material | Marinus J. M. Langen | 1980-02-19 |
| 4184413 | Apparatus for manufacturing a bag and delivering a bag in an open configuration to a check-out counter | Marinus J. M. Langen | 1980-01-22 |